Post by thread:Alarm System

Ricardo Barbosa wrote: > > Does anybody use a PIC 16Cxx in Home Alarm System? > Appreciate any help! > Thanks, > Ricardo Will anyone replyng to Ricardo echo to me also, I'm also interested in this. TIA. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Ken Parkyn PARKYN ELECTRONIC SERVICES 42 Binnalong Street ROCHEDALE SOUTH, Queensland, 4123 Australia Phone:617-3841-5135 email:spam_OUTK.ParkynTakeThisOuTsct.gu.edu.au ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

> > Does anybody use a PIC 16Cxx in Home Alarm System? > Appreciate any help! I'm working on a design now. I'm planning on using a distributed PIC system with one 16CXX in each console and a 16CXX as the master controller. The pieces will be tied together via a RS-485 network with the master controller polling the consoles giving status and receiving any commands. Of course all the communications will be done in software. I figure I won't need more that 1200 BPS (which can easily be generated by a PIC in a interrupt driver... I'm also using PICs for some home automation stuff. I had followed the computer controlled X-10 path, but I got frustrated at the lack of reliability (X-10 lights turning on and off all by themselves). So I've resorted to a hard wired relay driven system using the $4 12V 10A relays from Rat Shack. The home control PIC monitors a light to frequency circuit (using a 555 and a photo-resistor) and turns the outside lights on an off at appropriate times. Learning how to fish wire from the electrical box to the baseboard has been an adventure... BTW I bought all my door/window sensors and alarms (110 dB piezos) from All Electronics. I've settled on a Home Run arrangement to a fireplace in my currently unfinished basement. Hope this helps, BAJ

On Mon, 23 Sep 1996 07:41:50 -0400, you wrote: >> >> Does anybody use a PIC 16Cxx in Home Alarm System? >> Appreciate any help! > >I'm working on a design now. I'm planning on using a distributed PIC system >with one 16CXX in each console and a 16CXX as the master controller. The >pieces will be tied together via a RS-485 network with the master controller >polling the consoles giving status and receiving any commands. Of course all >the communications will be done in software. I figure I won't need more that >1200 BPS (which can easily be generated by a PIC in a interrupt driver... If you choose 16C63 and 16C73 chips you can use the USARTs to provide reliable serial communications between the units (MUCH faster than 1200 baud, and much less code). ---------------------------------------------------------- "Will you please shut up!" "You shut up. I am zee author, you are zee audience. I outrank you." -- The Producers

At 11:39 PM 9/23/96 GMT, Ron Hansen wrote: >On Mon, 23 Sep 1996 07:41:50 -0400, you wrote: > >>> >>> Does anybody use a PIC 16Cxx in Home Alarm System? >>> Appreciate any help! >> >>I'm working on a design now. I'm planning on using a distributed PIC system >>with one 16CXX in each console and a 16CXX as the master controller. The >>pieces will be tied together via a RS-485 network with the master controller >>polling the consoles giving status and receiving any commands. Of course all >>the communications will be done in software. I figure I won't need more that >>1200 BPS (which can easily be generated by a PIC in a interrupt driver... >If you choose 16C63 and 16C73 chips you can use the USARTs to provide >reliable serial communications between the units (MUCH faster than 1200 >baud, and much less code). See the ECH for software implementation of async communication. I've successfully modified that and created a half duplex protocol convertor that uses bit banged serial on one side and the USART on the other. My software USART runs up to 19.2 with a 7.8Mhz clock (9600 with 3.8Mhz). My code also has time to do "other things" while waiting for bit transitions. craig ____________________________________________________ Dr. Craig Hollabaugh Wireless Scientific, Inc. 1890 S. 14th, Suite 105 Amelia Island, FL 32034 904 261 6977 904 261 2129 fax .....wsciKILLspam@spam@net-magic.net

Hi Ricardo and Ken, here SET from Argentina: >Ricardo Barbosa wrote: >> >> Does anybody use a PIC 16Cxx in Home Alarm System? >> Appreciate any help! >> Thanks, >> Ricardo >Will anyone replyng to Ricardo echo to me also, I'm also interested in >this. I'm developing an alarm system for shelters, but can be used in homes, but still in developing. bye SET ******************************************************************************** Salvador Eduardo Tropea (SET) - salvadorKILLspaminti.edu.ar Work: INTI (National Institute of Industrial Technology) Sector: ICE (Electronic Control & Instrumentation) Post (Home): Curapaligue 2124 - Caseros (1678)- Buenos Aires - Argentina